LM556 Datasheet (Texas Instruments)

LM556, Dual Timer

The LM556 dual-timing circuit is a highly-stable controller capable of producing accurate time delays or oscillation.

The LM556 device is a dual-timing version of the LM555 device.

Timing is provided by an external resistor and capacitor for each timing function.

The two timers operate independently

LM556 Features

* 1 Direct Replacement for SE556/NE556

* Timing From Microseconds Through Hours

* Operates in Both Astable and Monostable Modes

* Replaces Two 555 Timers

* Adjustable Duty Cycle

* Output Can Source or Sink 200 mA

* Output and Supply TTL-Compatib